| Smolyan to Skarzysko-Kamienna | 682.72 mi (1,098.73 km) |
| Smolyan to Skawina | 625.62 mi (1,006.85 km) |
| Smolyan to Skierniewice | 748.65 mi (1,204.84 km) |
| Smolyan to Skoczow | 634.93 mi (1,021.83 km) |
| Smolyan to Skwierzyna | 874.01 mi (1,406.58 km) |
| Smolyan to Slawno | 956.08 mi (1,538.67 km) |
| Smolyan to Slubice | 882.26 mi (1,419.85 km) |
| Smolyan to Slupca | 806.70 mi (1,298.26 km) |
| Smolyan to Slupsk | 956.72 mi (1,539.69 km) |
| Smolyan to Sochaczew | 765.07 mi (1,231.27 km) |
| Smolyan to Sokolka | 818.34 mi (1,317.00 km) |
| Smolyan to Sokolow Podlaski | 756.11 mi (1,216.84 km) |
| Smolyan to Solec Kujawski | 849.47 mi (1,367.08 km) |
| Smolyan to Sopot | 932.22 mi (1,500.27 km) |
| Smolyan to Sosnowiec | 657.48 mi (1,058.12 km) |
